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Showing 1 to 20 of 37 for “"Evolutionary genetics"”.
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Evolutionary genetics of CYP2J19 in red carotenoid pigmentation
… and demonstrate how an understanding of evolutionary genetics benefit the study of the evolution of adaptive phenotypes.
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Evolutionary Genetics of Dictyostelids: Cryptic Species, Sociality and Sex
Dictyostelium discoideum serves as an ideal system to study social evolution because of the social stage of its lifecycle, where individuals aggregate to build a multicellular structure. However, much of its basic biology remains unknown and this limits its utility. I used three separate projects …
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Evolutionary genetics and systematics of fungi in the Collybia dryophila group
I have undertaken an evolutionary and systematic study of fungi in the <i>Collybia dryophila</i> group (Basidiomycetes: Tricholomataceae). Species in the <i>C. dryophila</i> group occur worldwide as primary litter decomposers, yet little is known about their systematics. In a previous study, the …
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Evolutionary genetics and genomics of flower colour loci in an Antirrhinum hybrid zone
Unravelling the genetic nature of reproductive isolation is crucial to understanding the maintenance of diversity between populations. In hybrid zones, loci that establish a barrier to gene flow between populations remain divergent, whereas neutral unlinked loci become mixed. In those instances, …
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The evolutionary genetics of sexually selected plumage colour traits in the galliform birds
… In this study I focused on in the evolution and genetics of colouration the galliform birds. Several novel loci were used to create a well resolved phylogeny of this group. This was then used to investigate and reconstruct the evolution of sexual plumage dichromatism. Four pigmentation genes were …
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Pollinator behaviour and the evolutionary genetics of petal surface texture in the Solanaceae
Conical cells in the petal epidermis are a common trait across the angiosperms, and influence pollinator behaviour and pollination success. This work explores two key aspects of conical cell evolution: firstly, why conical cells are so prevalent across many diverse species, and secondly, why some …
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Comparative chemical ecology, behaviour, and evolutionary genetics of acanthodactlylus boskianus (Squamata: Lacertidae) : comparative chemical ecology, behaviour and evolution
Acanthodactylus boskianus is a common lizard species frequently occurring in different habitats throughout Egypt. Both males and females have well developed epidermal femoral glands. This species is territorial and males acquire dominance hierarchies in captivity. The current work included three …
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Evolutionary Genetics of Three Nearctic Anopheline Mosquitoes: Anopheles Walkeri (Theobald), Anopheles Atropos (Dyar and Knab) and Anopheles Quadrimaculatus (Say)
Made available in DSpace on 2015-05-13T15:25:32Z (GMT). No. of bitstreams: 2 license.txt: 4848 bytes, checksum: 96035ab3f5e1c23cc7138a224ce498bd (MD5) 7811255.PDF: 7566343 bytes, checksum: 516012d03df7d1c7590c459f83318982 (MD5) Previous issue date: 1978
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Evolution in Neotropical Herpetofauna: Species Boundaries in High Andean Frogs and Evolutionary Genetics in the Lava Lizard Genus Microlophus (Squamata: tropiduridae): A History of Colonization and Dispersal
… summarized my investigations into the field of evolutionary genetics and more specifically into patterns of biodiversity and evolutionary processes. The lizards (and frogs) studied here share common features in that they are largely present in unique environments, which are also regions that are …
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New statistical genetic methods for elucidating the history and evolution of human populations
… human mutation rate, a fundamental parameter in evolutionary genetics, and provide evidence that it is higher than has been proposed in recent pedigree-based studies.
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L'azione economica tra etica e neurobiologia
… biological foundation of behaviour, expressed in evolutionary genetics terms. The aim of this paper is to establish whether our moral knowledge of economics may claim any scientific objectivity in light of advances in subject areas that differ in their scope and methods: moral philosophy, …
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TNFRSF13B Genetic variability an anthropological - evolutionary approach to Biomedical Research
… coding variants have been implicated by clinical genetics studies in Common Variable Immunodeficiency (CVID), the most common clinically relevant primary immunodeficiency in individuals of European ancestry, but their functional effects in relation to the development of the disease have not been …
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The mechanisms underlying convergent evolution in the plumage patterns of birds
… convergent evolution in plumage patterns: evolutionary genetics, evolutionary development, natural selection for signaling and camouflage. Japanese quail (Coturnix japonica) is a model system in developmental biology. Examining the developmental basis of pattern formation using molecular …
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Estimating evolutionary parameters and detecting signals of natural selection from genetic data
… DNA, the theoretical foundations of population genetics had been well developed. Advances made by Sewall Wright, John B.S. Haldane, and Ronald A. Fisher form the basis with which we understand the statistical dynamics of evolution and inheritance. Using this foundation, recent advances in DNA …
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Quantitative Genetics of Life History Microevolution in the Cayo Santiago Rhesus Macaques (Macaca Mulatta)
This is a study of the evolutionary genetics of a large colony of free-ranging rhesus macaques on Cayo Santiago, a small island located just off the coast of Puerto Rico. It focuses on documenting genetic and environmental influences on life history variation in female primates. The results are …
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Identification of genetic variation in the Keratin-associated protein and KRT33A genes of the Swakara sheep of Namibia
… to construct phylogenetic trees on Molecular Evolutionary Genetics Analysis (MEGA) version 6.0. At the KAP1.1 locus, the study revealed three alleles; A, B and C with genotype frequencies of 0.13, 0.57 and 0.30, respectively. Mostly the B allele frequency was highly distributed in comparison …
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Functional Sorting of Evolutionary Effects in Protein Domains
One of the most important questions in evolutionary genetics is whether a gene of interest is under positive selection, negative selection or neutral evolution. Although there are numerous existed methods and statistical tests to detect the action of positive selection, almost all of them heavily …
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Adaptation and hybridization in Helicoverpa crop pests
… taxa, producing ‘experiments in evolution’. Evolutionary genetics can be used to study invasive species and inform their management. In this thesis I focus on noctuid crop pests in the genus Helicoverpa, which are among the most economically significant agricultural pests in the world. …
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